There are eleven different sizes of AddBlock.
By tearing off the wing-like inserts, which are of varying thickness, and inserting them in the main block it is possible to accommodate 66 different cable and pipe dimensions, from 3.5 mm (0.14”) to 69.5 mm (2.74”).The inserts are fitted with a locating ridge that fits exactly into furrows in the main block. These stop the block from ”telescoping”.
A seal using AddBlocks is as secure and tight
as one using standard blocks. Both types can be combined in a transit, which makes the MCT Brattberg seal system very flexible.
AddBlocks are all the same length as standard Blocks, 60 mm (2.36”). The width of standard Blocks (A measurement, see table) are 20, 30, 40, 60 or 90 mm, (0.79”), (1.18”), (1.57”), (2.36”) or (3.54”).